Call for Abstracts
EGU General Assembly 2020
European Geoscience Union General Assembly 2020
3-8 May 2020
Vienna, Austria
Abstract submission deadline: 15 January 2020
For more information about the conference, go to:
https://www.egu2020.eu/
The European Geosciences Union (EGU) invites abstract submissions for the EGU General Assembly 2020. This conference will convene 3-8 May 2020 in Vienna, Austria.
Conveners of the following session invites abstract submissions:
SESSION AS2.2: Boundary Layers in High Latitudes - Physics and Chemistry
Conveners: William Neff, Jo Browse, Julia Schmale, Michael Tjernström, and Gillian Young
Changes in the Arctic and Antarctic climate systems are strongly related to processes in the boundary layer and their feedbacks with the free troposphere, ocean, and ice. An adequate understanding and quantification of these processes is necessary to improve predictions of future changes in the polar regions and their teleconnection with mid-latitude weather and climate, including meridional transport of heat, moisture, and chemical constituents. Processes include atmosphere-ocean-ice (AOI) interactions, physical and chemical snow processes (e.g. snow photochemistry), exchange of chemical constituents including biogeochemical impacts, sources of aerosol, polynya formation processes, sea ice production and loss, and cloud formation, which represent key processes for the atmosphere, ocean, and the cryosphere. AOI interactions are also triggered by and have feedbacks with synoptic systems and mesoscale weather phenomena such as cold air outbreaks, katabatic winds, and polar lows. Associated processes also include the effect of extreme events such as warm air advection and clouds on the surface energy budget and related boundary layer exchanges. In addition, understanding natural processes, including AOI interactions, is essential to understand the background atmosphere to quantify the anthropogenic impacts. Shallow inversions, mostly during winter-time, lead to high air pollutant concentrations. Even though severe air pollution episodes are frequently observed in the Arctic, knowledge on urban emission sources, transport, and atmospheric chemical processing of pollution, especially under cold and dark conditions, are poorly understood. Similarly, the polar boundary layer can involve complicated radiative processes such as shallow stable layers with fog present. In addition, polar boundary layers can mediate chemical, aerosol, and isotope exchanges between the atmosphere and the firn important to the interpretation of ice core records.
This session is intended to provide an interdisciplinary forum to bring together researchers working in the area of boundary layer processes and high-latitude weather and climate (including snow physics, air/snow chemistry, and oceanography). Cryosphere and atmospheric chemistry processes (the focus of the International Global Atmospheric Chemistry (IGAC)/Surface Ocean Lower Atmosphere Study activity “CATCH” and the IGAC/ International Arctic Science Committee activity “PACES”) are highly relevant to this session. Conveners also encourage preliminary results from field programs such as the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) and other high-latitude research efforts.
To submit an abstract to this session, go to:
https://meetingorganizer.copernicus.org/EGU2020/session/36922\
For questions about this session, contact:
William Neff
Email: william.neff [at] colorado.edu
Phone: 303-497-6265